Question

what are the advantages of using hydraulic systems rather than mechanical systems to operate automobiles or the control surfaces of an airplane? check all that apply they can work with very little energy loss to frictional heating. hydraulic systems also provide very sensitive controls with no mechanical lag because of the near incompressibility of the fluids used in them. the hydraulic lines (tubes) generate a lot of friction which is useful when transmitting applied forces. they use very compressible and cheap fluids.

Explanation:

1. Hydraulic systems have low energy loss to friction (unlike mechanical systems with more friction).
2. Hydraulic fluids are nearly incompressible, giving sensitive control with no mechanical lag.
3. Hydraulic lines don't generate useful friction for force transmission (friction is a loss here).
4. Hydraulic fluids are nearly incompressible, not very compressible.

Answer:

A. They can work with very little energy loss to frictional heating.
B. Hydraulic systems also provide very sensitive controls with no mechanical lag because of the near incompressibility of the fluids used in them.